Chapter case bullock gold mining 1 construct a spreadsheet to calculate the payback period, internal rate of return, modified inte rate of return , and net present value of the proposed mine. Met ad 632 mini case - bullock gold mining subject: business / finance question bullock gold mining seth bullock, the owner of bullock gold mining, is evaluating a new gold mine in south dakota. Complete solution is in the short tutorial may 12, 2017 the owner of bullock gold mining, is evaluating a new gold mine in south dakota alma has been asked by seth to perform an analysis of the new mine and cfa 2017 corporate finance capital budgeting mini case.